Every so often I'll get one of those automatic response e-mails from people informing me that they will be out of the office until next Thursday and telling me whom to call in case of emergency. I don't know these people and have not intentionally e-mailed them. So does this mean that my PC has been captured and integrated into some massive spambot? Are people getting e-mails from me offering them great deals on Canadian Viagra or worse? (Nothing against either Canada or Viagra, mind you.) If so, can I do anything about it? I am running XP SP2 by the way, use Firefox and have Nortion Antivirus. Thanks.

Mike